A trough of low pressure will move into the west of the state during Wednesday and bring rain and thunderstorms across the state from Wednesday into the weekend.

This rainfall may cause new and renewed flooding across NSW inland rivers and the Hunter River, many of which have been impacted by recent flooding.

The weather system is expected to cause flooding for the catchments listed from Thursday into the weekend.

Flood Classes (minor, moderate, major) are only defined for catchments where the Bureau provides a flood warning service.

What we are expecting:

Based on this prediction there is a 75% chance flooding developing in the following catchments: . Goulburn and Upper Hunter Rivers minor flooding . Wollombi Brook and Lower Hunter River minor to moderate flooding.

Minor flood levels

Low-lying areas next to water courses are inundated. Minor roads may be closed and low-level bridges submerged. In urban areas inundation may affect some backyards and buildings below the floor level as well as bicycle and pedestrian paths. In rural areas removal of stock and equipment may be required. Moderate flood levels

Moderate flood levels

In addition to the above, the area of inundation is more substantial. Main traffic routes may be affected. Some buildings may be affected above the floor level. Evacuation of flood affected areas may be required. In rural areas removal of stock is required.